scholarly journals New Developments of Solar Energy Utilization in the Aspect of EU Directives

2017 ◽  
Vol 21 (2) ◽  
pp. 15-24 ◽  
Author(s):  
Jan Barwicki ◽  
Maciej Kuboń ◽  
Andrzej Marczuk

AbstractPhotovoltaic systems are very efficient concerning proper utilization of solar radiation. However, the nanotechnology solution can replace the photovoltaic by the use of new production technology to lower the price of solar cells to one tenth. Sun provides nearly unlimited energy resource, but existing solar energy harvesting technologies are quite expensive and cannot compete with fossil fuels. The central part of Poland, which represents about 50 percent of the area, gives solar radiation at the level of 1000 kWh·m−2/year. Other new developments, which can help improve existing efficiency of solar systems are: diatoms utilization, artificial photosynthesis, nanoleaves and rotation solar towers.

Author(s):  
Ahmed Zkear Abass ◽  
D. A. Pavlyuchenko

<span>We have, an overview is presented of the potential future demands and possible supply of solar energy to Iraq. Solar energy, which is clean, unlimited, and environmentally friendly, is presented as a renewable energy resource. Many problems such as CO<sub>2</sub> emissions, industry, human activities, and electricity distribution grids have attracted much attention because of the current state of crude oil production and its prices. Moreover, estimations of solar radiation levels and of the efficiencies of photovoltaics (PVs), concentrated solar power (CSP), and solar chimney towers, have all been investigated. Those systems that combine various sources of energy are called hybrids and they have received much attention in recent decades. The basic features of solar radiation in Iraq are outlined, and the selection of those sites with potential for development of solar plants is based on the local largest solar radiation. Moreover, longitudinal and latitudinal orientation, wind, solar intensity, dust, temperature, rain, humidity, and pollution factors are all considered in the calculation of PV/CSP efficiencies. We know there is an abundance of fossil fuels in Iraq, energy shortages began in 1991 because of the perturbation caused by the full ruin of the country. The obvious renewable energy resource available in Iraq is the solar energy, and its exploitation would provide a means to reduce CO<sub>2</sub> emissions from the burning of fossil fuels and to achieve self-sufficiency of electric energy and export the rest to neighboring countries. Solar energy is becoming increasingly important because of the climatic change in the form of global warming.</span>


1964 ◽  
Vol 86 (4) ◽  
pp. 475-484 ◽  
Author(s):  
John I. Yellott

The most spectacular successes in solar-energy utilization in 1963 have been scored by the communications satellites, all of which are powered by megacell arrays of silicon solar batteries. So many satellites are now in orbit that it has literally become impossible to keep track of them. For the second generation of spacecraft, which will venture closer to the sun and also will need more power than today’s silicon cell arrays can conveniently produce, thermionic and thermoelectric converters and high-accuracy concentrators are now in the preflight test stage. On the earth’s surface, solar water heaters and low-capacity stills are gaining commercial acceptance in regions where fossil fuels and electricity are expensive. Production of drinking water from the sea and from brackish wells is receiving substantial research support, and encouraging progress is reported for both small and large solar stills. The much-needed solar pump and refrigerator are still awaiting the breakthrough which will result in low-cost collectors capable of generating steam or other vapors at moderate pressure. These projects urgently need financial support.


TERANG ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 10-15
Author(s):  
Christiono Christiono ◽  
Samsurizal Samsurizal ◽  
Septianissa Azzahra ◽  
Rizki Pratama ◽  
Titi Ratnasari ◽  
...  

The use of solar energy as an alternative to fossil fuels for electricity generation is increasingly being carried out nowadays. considering the decreasing oil reserves and also the environmental pollution that they cause. in order to increase the utilization of solar energy utilization in Indonesia, it is necessary to conduct socialization or introduction to various elements of society, especially students, so that it is expected to provide understanding and will also increase the utilization of solar cells in the future. socialization of Renewable Energy Utilization (PLTS) carried out at SMP IT ALMAKA Jakarta was conducted by giving an introduction to how solar cells work, problems regarding solar cells and how to apply solar cells to meet the electricity needs of the community. The presentation was conducted with an interactive method with theoretical exposure, demonstration of how to use solar cells, and question and answer sessions. the results obtained were that the participants seemed enthusiastic and able to understand how to apply solar cells seen in the question and answer session. so that participants who are the younger generation are expected to be able to develop and utilize the use of solar cells for future energy sources


Solar Energy ◽  
2002 ◽  
Author(s):  
T. Nakamura ◽  
J. A. Case ◽  
C. L. Senior ◽  
D. A. Jack ◽  
J. L. Cuello

In the past 10 years, Physical Sciences Inc. has been developing the Optical Waveguide (OW) System for solar energy utilization. In this system, solar radiation is collected by the concentrator which transfers the concentrated solar radiation to the OW transmission line. The OW transmission line transports the solar radiation to the location of solar energy utilization. Applications of this system include: material processing and plant lighting in space as well as power generation. In this paper we present a review of our work conducted during the last 10 years on the lunar material processing and space-based plant growing.


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